Plant most uncommon cutting in France, yes? (6)

I believe the answer is:

ourari

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'plant most uncommon cutting in france yes?' is the definition.
'ourari' can be an answer for 'plant' (I've seen this before). I am unsure of the 'most uncommon cutting in france yes?' bit.

This is the entire clue.

Can you help me to learn more?

(Other definitions for ourari that I've seen before include "Plant yielding poison" , "plant producing poison" , "Source of poison" .)

I've seen this clue in The Times and The Sunday Times.

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